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Torrington
Torrington Design
NIECEIC / NAAPIT GASSAFE WATER REGULATIONS We offer services towards completion of high end construction projects to dis...
"Did callout made safe my elctrical work thanks" - reviewed 16/05/23, REECYRUSSO
London Trowel Co.
Relax... you have found a reliable extension builder in Islington. London Trowel Co. is a friendly and reliable company based in Islington who cons...
"Underpin a building" - N7, job posted 23/08/26
Thermodynamic Building Services Ltd
Trusted and professional extension builder in Islington. Experienced in all extension buildering work and keeping within budget and on quote. Therm...
"Having planning permission, having structure drawing, about 40 square metres basement extension, looking for builders, want to be done ASAP." - N7, job posted 15/12/23
First guard Roofing
Darren Bergin
Relax... you have found a reliable extension builder in Islington. First guard Roofing is a friendly and reliable company based in Islington who co...
CK Constructions & Development Ltd
CK Constructions & Development Ltd is a trusted extension builder serving customers in Islington and the surrounding area. Contact us to today to g...
GS Fabric Ltd
GS Fabric Ltd is an established and experienced local extension builder in Islington. Please contact us for a free, no obligation quote and competi...
JM Building Services
JM Building Services is a trusted extension builder serving customers in Islington and the surrounding area. Contact us to today to get a competiti...
Andreas Thomas Demetri
Andreas Thomas Demetri is a trusted extension builder serving customers in Islington and the surrounding area. Contact us to today to get a competi...
Buildwiser
Buildwiser is a trusted extension builder serving customers in Islington and the surrounding area. Contact us to today to get a competitive quote f...
Carbin Canopy
Relax... you have found a reliable extension builder in Islington. Carbin Canopy is a friendly and reliable company based in Islington who consider...
Amastic Roofing Building and Scaffolding Services Ltd
Trusted and professional extension builder in Islington. Experienced in all extension buildering work and keeping within budget and on quote. Amast...
Brooks Builders & Decorators
Islington London, N1
Brooks Builders & Decorators is an established extension buildering business in Islington. We come highly recommended and provide competitive quote...
DLER SINGH D S BUILDERS
DLER SINGH D S BUILDERS are here to help customers who need an Extension Builder in Islington. We offer a competitive rate to complete all your ext...
COMPLETE BUILDING COMPANY
Frankie
COMPLETE BUILDING COMPANY are here to help customers who need an Extension Builder in Islington. We offer a competitive rate to complete all your e...
D B Duri Building
D B Duri Building are here to help customers who need an Extension Builder in Islington. We offer a competitive rate to complete all your extension...
Q Lofts and Extensions
Anthony Sullivan
We build Lofts. We build Extensions. We undertake conversions. Our Terms and conditions apply as shown in our starter packs.
£43/hr
£268/day
FISKA DESIGN & BUILD
FISKA DESIGN & BUILD are here to help customers who need an Extension Builder in Islington. We offer a competitive rate to complete all your extens...
£41/hr
£255/day
Maddison & Sons
Maddison & sons pride ourselves on attention to detail at the highest level.With an extensive background As Mains Contractors in construction fabri...
£41/hr
£255/day
TOP CONSTRUCTION
TOP CONSTRUCTION is an established extension buildering business in Islington. We come highly recommended and provide competitive quotes for your w...
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Use these steps to find Extension Builders in Islington for FREE!
- Post your job: Click "Get quotes" and briefly describe your job.
- Enter your details: We’ll match you with Extension Builders in Islington. We’ll notify you via text or email when an Extension Builder is available to quote.
- Select your Extension Builder: Compare Extension Builders interested in working with you. You can use HaMuch to safely message local Islington Extension Builders or phone them directly - you’re in control!
Local Extension Builders in London Boroughs
Job estimates from extension builders near you
Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.
Build a timber frame extension - £26,232
Garden office - £10,232
Granny annexe - £87,232
Build a flat roof extension - £22,232
Convert a Garage - £16,232
Hip to gable loft conversion - £42,232
Convert a bungalow loft - £29,232
Build a dormer loft conversion - £42,232
Build a swimming pool - £81,232
Build a Mansard loft conversion - £52,232
Concrete foundations - £6,482
Underpin a building - £17,732
Two storey extension - £88,348
Convert a basement - £40,110
Side return extension - £44,110
Loft conversion - £35,925
Garage - £18,732
Single storey extension - £59,640
Outbuilding - £10,232
Install an RSJ - £2,432
Build a kitchen extension - £42,232
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